• Mathematics through Paper Folding by Alton T. Olson, NCTM, 1975, 1977, 1986, 1987, ISBN 0-87353-076-4
• Polyhedron Models for the Classroom by Magnus J. Wenninger, NCTM, 1966, 1975, ISBN 0-87353-083-7
• http://www.arvindguptatoys.com/arvindgupta/sundararow.pdf
• https://en.wikipedia.org/wiki/Mathematics_of_paper_folding
• http://www.cut-the-knot.org/pythagoras/PaperFolding/SegmentDivision.shtml
• http://www.arvindguptatoys.com/arvindgupta/paperfolding.pdf
• https://www.ics.uci.edu/~eppstein/junkyard/origami.html
• http://mathworld.wolfram.com/Origami.html
• http://www.paperfolding.com/math/
• Unit Origami by Tomoko Fuse, Japan Publications Trading Company, 1990. ISBN 0-87040-852-6
• Joyful Origami Boxes by Tomoko Fuse, Japan Publications Trading Company, 1995. ISBN 0-87040-974-3
• Origami Resource Center – http://www.origami-resource-center.com/
• Origami + Math + Mobiles - https://napmath.wordpress.com/2013/08/22/origami-math-mobiles/
• Pop-Up Origamic Architecture by Masahiro Chatani, Ondorisha Publishers, LTD ISBN 0-87040-656-6
• Unit Origami by Tomoko Fuse, Japan Publications Trading Company, 1990. ISBN 0-87040-852-6
• Joyful Origami Boxes by Tomoko Fuse, Japan Publications Trading Company, 1995. ISBN 0-87040-974-3
• Origami Resource Center – http://www.origami-resource-center.com/

Valentine Math/Paper Folding Activities

• Origami Hearts with tutorials http://www.origami-instructions.com/origami-hearts.html
• Make your hearts into a mobile: https://napmath.wordpress.com/2013/08/22/origami-math-mobiles/ “I <3 You” Pop up card template: http://sixinthesuburbsblog.blogspot.com/2012/01/free-printable-valentines-day-pop-up.html YouTube Video: https://www.youtube.com/watch?v=-3g3jHTHoXI
  • A variation: templates: Part 1: https://app.box.com/s/z7brmsbdalq38pp4j6suumaaq1ygpmcm Part 2: https://app.box.com/s/lv4lenck21n7upppzn8c0ncygyfi42ge Video: https://www.youtube.com/watch?v=bA6woVGmOvE
• Pop-Up Greeting Cards – A Creative Personal Touch for Every Occasion - Origamic Architecture by Masahiro Chatani, Ondorisha Publishers, LTD, 1986 ISBN 0-87040-733-3

Want more Holiday math activities? Check out: http://greenapples.wikispaces.com/Holiday+Math

Trisect an angle with paper folding!

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Hexaflexagons

Hexaflexagons: Hooraaaay flexagons! Next hexaflexagon video in one week. Happy October!More info coming soon.


Hexaflexagons 2: This video is based on, and in honor of, Martin Gardner's column from 1956, "Hexaflexagons," which can be found here: http://maa.org/pubs/focus/Gardner_Hexaflexagons12_1956.pdf. For more information, see the top comment below.

Hexaflexagons with tortillas

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How many times can you fold a piece of paper in half? 7? 8? See what the Mythbusters found out.